Happy Shredding!

1. What does my UI look like?
Becaue I would have to reformat all of happyshredding to fit my 1920x1080 screenshot in the margins, here are two external links:2. How should I create my UI?
One's UI is a really personal thing, however there are several things to keep in mind:I. Everyone one needs Recount, Omen, PowerAuras, DBM and Unit Frames (there are other addons with the same functionality and they will do just fine)
II. You should bind all abilities to a keyboard button. If you are clicking your abilities are you gimping your play. While many good players are clickers, you simply can't argue that it is optimal. If you have to turn quickly you must turn using your mouse, which means you have to give up dps because you can't click. If you don't use your mouse to turn, you'll probably die from a boss mechanic frequently. I use a Belkin n52te, this allows me to bind all my abilities and never lift my hands in combat. If you don't use a gaming pad, I suggest keybinds like this.
III. If you are a healer, a setup like this one is required (stolen from a guildie), and for everyone else, its useful to put everything you need to see in one place. I, however, have gained enough experiance with the feral rotation, that I rarely watch my timers, I can keep them in my head very effectively. Because of this, I put them off to the side, so I can better view the boss mechanics. I only recommend this for experienced players.